Always trim your wick to approx 5mm before every burn. Not only does it give you a more economical burn, it gives off less smoke.
Light your candle in a well-ventilated room on an even surface and away from draughts.
Allow your candle to burn for between 1 and 2 hours until the wax melts to the edge of your container. This will give you an even melt pool which avoids ‘tunnelling’ and wasted wax.
Do not burn for more than 4 hours as this can cause wick migration.
Your containers are too lovely to throw away! After burn out think about recycling your candle glasses.